.con{
    display: flex;
    justify-content: space-around;
    margin: 100px auto;
  }
  #left .container .box-user {
    height: 450px;
    width: 300px;
    border: 2px solid pink;
    box-sizing: content-box;
  }
  #left .container .box-user .top-box {
    height: 400px;
    border-bottom: 2px solid pink;
    overflow: auto;
  }
  #left .container .box-user .top-box > ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
  }
  #left .container .box-user .top-box > ul > li {
    border: 2px solid pink;
    max-width: 70%;
    flex-shrink: 0;
    word-wrap: break-word;
    margin: 6px;
    padding: 5px;
    border-radius: 5px;
  }
  #left .container .box-user .bottom {
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  #left .container .box-user .bottom input[name='msg'] {
    height: 25px;
    flex: 0.75;
    border: 2px solid pink;
    border-radius: 5px;
    outline: none;
  }
  #left .container .box-user .bottom .btn-send {
    flex: 0.2;
    height: 30px;
    margin-left: 5px;
    background-color: pink;
    color: blue;
    border: 0;
    border-radius: 5px;
  }
  #left-send{
    cursor: pointer;
  }

  



  
  
  #right .container .box-user {
    height: 450px;
    width: 300px;
    border: 2px solid pink;
    box-sizing: content-box;
  }
  #right .container .box-user .top-box {
    height: 400px;
    border-bottom: 2px solid pink;
    overflow: auto;
  }
  #right .container .box-user .top-box > ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
  }
  #right .container .box-user .top-box > ul > li {
    border: 2px solid pink;
    max-width: 70%;
    flex-shrink: 0;
    word-wrap: break-word;
    margin: 6px;
    padding: 5px;
    border-radius: 5px;
  }
  #right .container .box-user .bottom {
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  #right .container .box-user .bottom input[name='msg'] {
    height: 25px;
    flex: 0.75;
    border: 2px solid pink;
    border-radius: 5px;
    outline: none;
  }
  #right .container .box-user .bottom .btn-send {
    flex: 0.2;
    height: 30px;
    margin-left: 5px;
    background-color: pink;
    color: blue;
    border: 0;
    border-radius: 5px;
  }
  #right-send{
    cursor: pointer;
  }